Transcription of TheBasicsof AIR-COOLEDHEATEXCHANGERS
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The Basics of AIR-COOLED HEAT EXCHANGERS. HUDSON. Products Corporation A Subsidiary of Hudson Products Holdings, Inc. CONTENTS. Page FOREWORD ..i NOMENCLATURE ..ii I. DESCRIPTION OF AIR-COOLED HEAT EXCHANGERS ..1. Components ..1. Tube Bundle ..1. Axial Flow Fans ..5. Plenum ..6. Mechanical Equipment ..6. Structure ..6. Comparison of Induced and Forced Units ..7. Induced Draft ..7. Forced Draft ..7. II. THERMAL DESIGN ..8. Typical Heat Transfer Case I ..13. Application of Design Method ..19. Sample Problem ..20. Fan Selection Horsepower Requirements ..21. III. PERFORMANCE CONTROL OF ACHEs ..21. Varying Air Flow ..23. Extreme Case Controls.
F=MTD correction factor Dimensionless f=Fanning friction factor Dimensionless. ii FA = face area ft 2 FV = standard air face velocity std ft/min ... LMTD = log mean temperature difference °F M=mass flow rate lb/hr mw = minimum wall thickness in …
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